SM5877AM

SM5877AM NIPPON PRECISION CIRCUITS INC. 3rd-order Σ∆, 2-channel D/A Converter OVERVIEW The SM5877AM is a 3rd-order Σ∆, 2-channel D/A converter LSI for digital audio reproduction equipment. It also incorporates an 8-times oversampling digital filter and analog, post-converter lowpass filters. The SM5877AM has digital deemphasis filter, attenuator, and soft mute circuits built-in. Double-speed operation and low-voltage operation are also supported. The SM5877AM operates from a 2.7 to 5.5 V supply, and is available in 24-pin SSOPs. PINOUT MUTE DEEM CKO DVSS BCKI DI DVDD LRCI TSTN 1 2 3 4 5 6 24 23 22 21 20 19 ATCK MODE RSTN DS XVSS XTO XTI XVDD MUTEO AVDDR RO AVSS SM5877AM 7 8 9 10 11 12 18 17 16 15 14 13 FEATURES s s TO1 AVDDL s s s s s s s s s s s s 2.7 to 5.5 V operating supply voltage range 4.5 to 5.5 V operating supply voltage range for double-speed mode 44.1 kHz sampling frequency Normal (384fs) and double-speed (192fs), 16.9344 MHz system clock 16.9344 MHz crystal oscillator circuits built-in 16-bit, MSB first, rear-packed serial data input format (≤ 64fs bit clock) 8-times oversampling digital filter 32 dB stopband attenuation ±0.05 dB passband ripple Deemphasis filter operation 36 dB stopband attenuation −0.09 to +0.23 dB deviation from ideal deemphasis filter characteristics Attenuator 6-bit attenuator (64 steps) Soft mute function when MODE is HIGH (approx. 1024/fs total muting time) Built-in infinity-zero detector Σ∆ 2-channel D/A converter 3...